84020599542 has 64 divisors (see below), whose sum is σ = 193966352640. Its totient is φ = 23995699200.

The previous prime is 84020599517. The next prime is 84020599567. The reversal of 84020599542 is 24599502048.

It is an interprime number because it is at equal distance from previous prime (84020599517) and next prime (84020599567).

It is a super-2 number, since 2×84020599542² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84020599491 and 84020599500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68442 + ... + 415602.

It is an arithmetic number, because the mean of its divisors is an integer number (3030724260).

Almost surely, 2^84020599542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84020599542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96983176320).

84020599542 is an abundant number, since it is smaller than the sum of its proper divisors (109945753098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84020599542 is a wasteful number, since it uses less digits than its factorization.

84020599542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347389.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 84020599542 in words is "eighty-four billion, twenty million, five hundred ninety-nine thousand, five hundred forty-two".